Title
A Real-Time 3d Ir Camera Based On Hierarchical Orthogonal Coding
Abstract
We present a real-time 3D camera based on ER (infrared) structured light suitable for robots worlding in home environment First, we implemented a HOC (Hierarchical Orthogonal Coding) based FPGA board. The HOC gives robust depth images because the signal separation coding provides not only the separation of overlapped codes, but also a robust decision on pixel correspondence with error correction. The FPGA module can handle high computational cost of HOC based signal separation coding. Second, we implemented a compact optic system of the camera to project and receive IR structured light. The invisible ER pattern light provides users inconvenient in the home environment. Various objects and workspaces which has continuous and/or non-continuous surface are tested and, sensitivity to illumination change and processing time are analyzed. The experiment results show the robust performance for surface smoothness, color, and materials of objects used in home environment. The proposed approach opens a greater feasibility of applying structured light based depth imaging to a 3D modeling of cluttered workspace for home service robots.
Year
DOI
Venue
2006
10.1109/ROBOT.2006.1642004
2006 IEEE INTERNATIONAL CONFERENCE ON ROBOTICS AND AUTOMATION (ICRA), VOLS 1-10
Keywords
Field
DocType
3D sensor, signal separation coding, range sensing, structured light
Computer vision,Structured light,Image sensor,Workspace,Computer science,Coding (social sciences),Error detection and correction,Pixel,Artificial intelligence,Robot,3D modeling
Conference
Volume
Issue
ISSN
2006
1
1050-4729
Citations 
PageRank 
References 
2
0.44
2
Authors
5
Name
Order
Citations
PageRank
Sukhan Lee11160280.42
Jongmoo Choi28711.95
Oh Seungsub3101.78
Jaehyuk Ryu420.78
Jungrae Park520.44